{"product_id":"schneider-electric-ck400nn-circuit-breaker","title":"Schneider Electric | CK400NN | Circuit Breaker | 3-Pole","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Schneider Electric CK400NN — a purpose-built 3-Pole Circuit Breaker crafted for dependable protection in maintenance, retrofit, and replacement projects where exact specifications matter. This unit is designed to slot into compatible Schneider Electric panels and assemblies with precision, helping you keep electrical systems safe and downtime minimal.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eExact compatibility reference\u003c\/strong\u003e: The CK400NN part number is the most reliable guide for matching breakers to your existing panel and accessory lineup.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e3-Pole protection\u003c\/strong\u003e: Specifically designed for three-phase circuits, supporting coordinated protection across multiple conductors.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eIdeal for replacements and retrofits\u003c\/strong\u003e: A targeted choice when you need a direct substitute that aligns with original specs, reducing rework and uncertainty.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSmart purchasing note\u003c\/strong\u003e: Confirm the breaker’s fit and ratings before ordering to ensure seamless installation and electrical safety.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eThis breaker is especially well-suited for electrical professionals and facilities teams managing commercial or light industrial panels that require reliable 3-phase protection. By choosing CK400NN, you simplify cross-reference management and streamline procurement—relying on a well-known, traceable part number rather than opaque substitutions.\u003c\/p\u003e \u003cp\u003eUse cases and practical guidance:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eMaintenance tasks where a direct, spec-matched replacement is essential to preserve panel performance.\u003c\/li\u003e \u003cli\u003eRetrofits that demand an exact cross-reference to avoid panel modification or rewiring.\u003c\/li\u003e \u003cli\u003eUpgrades in systems that previously used a CK-series device, ensuring consistent protection characteristics and compatibility.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eIn short, the CK400NN 3-Pole Circuit Breaker from Schneider Electric delivers clear compatibility, reliable three-phase protection, and a straightforward path to maintenance and retrofit success. Verify the fit and ratings against your documentation, reference the CK400NN part number for exact replacement, and proceed with confidence.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Schneider Electric","offers":[{"title":"Default Title","offer_id":46427184496802,"sku":"CK400NN","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/schneider-electric-ck400nn-circuit-breaker-3-pole-506.webp?v=1789679807","url":"https:\/\/www.ampstate.com\/products\/schneider-electric-ck400nn-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}